mb/lenovo/*/devicetree: Add support for WWAN detection

Add support for WWAN detection on SNB/IVB boards that have
schematics or are available for testing.

Tested on Lenovo T430.

Change-Id: Ie96b2593971d49703eb747ab19f512be890d9c12
Signed-off-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-on: https://review.coreboot.org/20984
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/lenovo/t430/devicetree.cb

@@ -150,6 +150,10 @@ chip northbridge/intel/sandybridge
 					register "has_bdc_detection" = "1"
 					register "bdc_gpio_num" = "54"
 					register "bdc_gpio_lvl" = "0"
+
+					register "has_wwan_detection" = "1"
+					register "wwan_gpio_num" = "70"
+					register "wwan_gpio_lvl" = "0"
 				end
 				chip drivers/lenovo/hybrid_graphics
 					device pnp ff.f on end # dummy

src/mainboard/lenovo/t520/variants/t520/devicetree.cb

@@ -133,6 +133,10 @@ chip northbridge/intel/sandybridge
 					register "has_bdc_detection" = "1"
 					register "bdc_gpio_num" = "54"
 					register "bdc_gpio_lvl" = "0"
+
+					register "has_wwan_detection" = "1"
+					register "wwan_gpio_num" = "70"
+					register "wwan_gpio_lvl" = "0"
 				end
 				chip drivers/lenovo/hybrid_graphics
 					device pnp ff.f on end # dummy

src/mainboard/lenovo/t530/variants/t530/devicetree.cb

@@ -140,6 +140,10 @@ chip northbridge/intel/sandybridge
 					register "has_bdc_detection" = "1"
 					register "bdc_gpio_num" = "54"
 					register "bdc_gpio_lvl" = "0"
+
+					register "has_wwan_detection" = "1"
+					register "wwan_gpio_num" = "70"
+					register "wwan_gpio_lvl" = "0"
 				end
 				chip drivers/lenovo/hybrid_graphics
 					device pnp ff.f on end # dummy

src/mainboard/lenovo/x1_carbon_gen1/devicetree.cb

@@ -159,6 +159,10 @@ chip northbridge/intel/sandybridge
 					register "has_bdc_detection" = "1"
 					register "bdc_gpio_num" = "54"
 					register "bdc_gpio_lvl" = "0"
+
+					register "has_wwan_detection" = "1"
+					register "wwan_gpio_num" = "70"
+					register "wwan_gpio_lvl" = "0"
 				end
 			end # LPC bridge
 			device pci 1f.2 on

src/mainboard/lenovo/x220/devicetree.cb

@@ -170,6 +170,10 @@ chip northbridge/intel/sandybridge
 					#  BDC's connector pin14 is left floating
 					#  BDC's connector pin1 is routed to SB GPIO 54
 					register "has_bdc_detection" = "0"
+
+					register "has_wwan_detection" = "1"
+					register "wwan_gpio_num" = "70"
+					register "wwan_gpio_lvl" = "0"
 				end
 			end # LPC bridge
 			device pci 1f.2 on

src/mainboard/lenovo/x230/devicetree.cb

@@ -172,6 +172,10 @@ chip northbridge/intel/sandybridge
 					#  BDC's connector pin14 is left floating
 					#  BDC's connector pin1 is routed to SB GPIO 54
 					register "has_bdc_detection" = "0"
+
+					register "has_wwan_detection" = "1"
+					register "wwan_gpio_num" = "70"
+					register "wwan_gpio_lvl" = "0"
 				end
 			end # LPC bridge
 			device pci 1f.2 on